Generation of a vector doughnut beam from an internal mirror He-Ne laser

Sunil Vyas, Yuichi Kozawa, Shunichi Sato

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We demonstrate the direct generation of a vector doughnut mode from an internal mirror He-Ne laser using the spot defect method. A circular-shaped spot defect of ~30 μm in diameter with low reflectivity created on the inner surface of a cavity mirror by laser ablation suppressed the oscillation of a Gaussian beam resulting in the oscillation of a doughnut beam. Polarization investigation showed that the generated beam was a vector hybrid mode.

Original languageEnglish
Pages (from-to)2080-2082
Number of pages3
JournalOptics Letters
Volume39
Issue number7
DOIs
Publication statusPublished - 2014 Apr 1

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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